Muscle Fiber Types and Strength Training
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Questions and Answers

What happens to mitochondrial density with an exclusive high-intensity strength program?

  • Decreases (correct)
  • Remains the same
  • Doubles
  • Increases

    • Which type of muscle fibers are more powerful and fatigue more easily than type I fibers?

  • Type III fibers
  • Type IIb fibers
  • Type IIa fibers (correct)
  • Type I fibers

    • What is the characteristic of type IIa muscle fibers in terms of twitching?

  • No twitch
  • Slow twitch
  • Intermediate twitch
  • Fast twitch (correct)

    • What does rigor mortis result in after death?

    <p>Muscle stiffening</p> Signup and view all the answers

    What type of muscle fibers support long distance endurance activities like marathon running?

    <p>Slow-twitch (type I)</p> Signup and view all the answers

    What occurs in skeletal muscle fibers due to strength training?

    <p>Increase in muscle fiber hypertrophy</p> Signup and view all the answers

    Which type of muscle fibers support quick, powerful movements like sprinting or weightlifting?

    <p>Fast-twitch (type II)</p> Signup and view all the answers

    What type of muscle fibers are characterized by moderate resistance to fatigue and are important for activities like cycling or swimming?

    <p>Type IIa</p> Signup and view all the answers

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